<template>
  <div>
    <!--面包屑导航-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片视图-->
    <el-card class="box-card">
        <el-row :gutter="20">
            <!--搜索商品的输入框-->
            <el-col :span="8">
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="clearInput">
                    <el-button slot="append" icon="el-icon-search" @click="searchGoods"></el-button>
                </el-input>
            </el-col>
            <!--添加商品的按钮-->
            <el-col :span="4">
                <el-button type="primary" @click="goAddGoods">添加商品</el-button>
            </el-col>
        </el-row>
        <!--商品列表的表格-->
        <el-table :data="goodsList" style="width: 100%" border stripe>
            <!--索引列-->
            <el-table-column
                type="index"
                label="#">
            </el-table-column>
            <el-table-column
                prop="goods_name"
                label="商品名称">
            </el-table-column>
            <el-table-column
                prop="goods_price"
                label="商品价格(元)"
                width="95">
            </el-table-column>
            <el-table-column
                prop="goods_weight"
                label="商品重量"
                width="70">
            </el-table-column>
            <el-table-column
                label="创建时间"
                width="140">
                <template slot-scope="scope">
                  {{$moment(scope.row.add_time*1000).format('YYYY-MM-DD hh:mm:ss')}}
                  <!-- {{scope.row.add_time*1000|dateFormat('yyyy-MM-dd hh:mm:ss')}} -->
                </template>
            </el-table-column>
            <el-table-column
                label="操作"
                width="130">
                <template slot-scope="scope">
                    <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
                    <el-button type="danger" icon="el-icon-delete" size="mini" @click="deleteGoods(scope.row)"></el-button>
                </template>
            </el-table-column>
        </el-table>
        <!--商品分页-->
        <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 20, 30]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background>
        </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 获取商品列表数据所携带的参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表数据
      goodsList: [],
      // 商品总条数
      total: 0
    }
  },
  created () {
    // 获取商品列表数据
    this.getGoodsList()
  },
  methods: {
    // 发送请求 获取商品列表数据
    async getGoodsList () {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) return this.$message.error('获取商品列表数据失败')
      this.goodsList = res.data.goods
      this.total = res.data.total
    },
    // 当每页显示的条数发生变化时触发
    handleSizeChange (newPageSize) {
      this.queryInfo.pagesize = newPageSize
      // 获取商品列表数据
      this.getGoodsList()
    },
    // 当页码发生变化时触发
    handleCurrentChange (newPageNum) {
      this.queryInfo.pagenum = newPageNum
      // 获取商品列表数据
      this.getGoodsList()
    },
    // 点击搜索按钮 触发的函数
    searchGoods () {
      // 获取商品列表数据
      this.getGoodsList()
    },
    // 点击清空输入框按钮时触发
    clearInput () {
      // 获取商品列表数据
      this.getGoodsList()
    },
    // 点击删除按钮 提示用户是否删除商品
    async deleteGoods (goodsInfo) {
      const result = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(() => {
        this.$message({
          type: 'info',
          message: '已取消删除'
        })
      })
      if (result === 'confirm') {
        // 发送请求 删除商品
        const { data: res } = await this.$http.delete('goods/' + goodsInfo.goods_id)
        if (res.meta.status !== 200) return this.$message.error('删除商品失败')
        this.$message.success('删除商品成功')
        // 重新获取商品列表数据
        this.getGoodsList()
      }
    },
    // 点击添加商品按钮 跳转到添加商品页面
    goAddGoods () {
      this.$router.push('/goods/add')
    }
  }
}
</script>

<style lang='less' scoped>
.el-pagination {
    margin-top: 15px;
}
</style>
